#include <stdio.h>
#include <time.h>

int main(){
    printf("%ld\n", CLOCKS_PER_SEC);
    clock_t start = clock();
    clock_t end = clock();
    printf("%ld\n", start);
    printf("%ld\n", end);
    time_t t = time(&t);
    printf("%s\n", ctime(&t));
    return 0;
}